Massac County RainfallUnited StatesILMassac County0%Metropolis 0% Chance 0%Brookport 0% Chance 5%Mermet Lake 5% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville